If you are a new owner of an antique house, you will most definitely want to join one or more of our local historical societies.
Sharon Historical Society, Salisbury Association, and Northeast Historical Society are but a few of the local ones. Litchfield Historical Society, Dutchess County Historical Society and Columbia County Historical Society are active groups at the county level.
The restoration and preservation process naturally requires research into local vernacular architecture. These historical societies offer a wealth of resources in their libraries and archives.
I have personally found the staff of each of these organizations to be most helpful and friendly. For those of you who are really enthusiastic, please consider joining Historic New England. This organization offers a number of resources for its members, including help with research of an historic property.